Spotlight color screen



I im; so, 1923; nmzms a. E. STEPHENSON SPOTLIGHT COLOR SCREEN Filed Dec. 9. 1921 2 Sheets-Sheet 1 r m maze I Mew?? G. E. STEPHENSON SYPOTLIGHT coLoR SCREEN 2 Sheets-Sheet 2 Filed Dec. 9. 1921 Patented @ct. 3 3), 1923.

UNETE s l are }re GEORGE E. STEPHENSON, OF CHICAGO, I IILLINOIS.

srormencr COLOR SCREEN.

Application filed December 9, 1921.1 SeriaiHo. 521,165.

To all whom it may concern:

Be it known that I GEORGEEDSTEPHE son, a citizen of the Ilnite'd States, residing. at Chicago, in the county of Cook and'State of Illinois, have invented certain new and useful Improvements in Spotlight Color Screens, of which thefollowing is a description. f

' My invention relates to-improvements in spot lights and color screens therefor, and more particularly to a'spot light provided with a revolving color screen which may be controlled, as desired, and means for adjusting the same as'desi-red, the drive means for rotating said screen being uninterrupt-. edly operated even while adjustmentsare' being made.

'Another object of my invention is to pro-L vide a single drive means suitable for a battery of any number of spot lights and color screens, and wherein any of said screens may be individually adjusted without interrupting said drive.

The invention has among its other objects the production of a device of the kind described which is simple, convenient, com pact, durable, reliable, efficient and satisfactory for use wherever'found applicable.

To this end my inventionconsists in the novel construction, arrangement and combination of parts herein shown and de-' scribed,-and more particularly'pointed out in the'claims. f In the drawings, whereinlike reference characters indicate like or corrjesponding parts.

Fi l is a top plan'view of'm'y' device; Fig. 2 is an elevation, thereof taken in the rear of Fig. '1; f f

' Fig. 3 is asectional'view taken substantially on the line 3-3 of Fig.2,

"Fig. 41s a sectional view taken substantia'lly on the line 44 of Fig. 1;

Fig. 5 is a sectional .view taken -substantially on the line 5-5 of Fig. 4:;

Fig. 6 is a sectional view taken substantially on the line 66 of Fig. 4 V

Fig. 7 is a sectional view taken'substantially on the line 7-7 of Fig. 4:, I

Fig. 8 is a sectional view taken substan tially on the line 88, of Fig. 2, and I Fig. 9. is a sectional view taken substan tially on the line 9-9 of Fig. 8.

Referring to the drawings, wherein I have illustrated the preferred embodiment o'f nay invention and several associated devices,

there is shown a battery of spot lights arranged one adjacent the other and comprising any number. Each spot light has therein a lamp 1 of any suitable size or shape and mounted on a suitable frame-or base 2, the frame shown being in the form'of a housing or casing" of suitable size, shape and material. A lens '3 is mounted in one of the side walls of said lamp housing so that the rays of light from said lamp'may be directed as desired. The energy for the lamp 1 is conducted thereto by a lead wirelfrom a suitable source of energy. Preferably secured to the opposite sides of the housing 2 and pro ecting in opposite directions are bosses orlugs 5 and 6.for supporting said housing, as will be more clearly hereinafter described.

A: bracket, preferably in the shape of a J, in that it hasa' pair of parallel legs 7 and 8, one shorter than the other, and'with a transverse connecting portion at one end, is providedto adjusta'bly'carry the hous-' mg 2. The bracket'7-8 comprises two sections which may be telescopically connected to. each other at their transverse portions 7 8, and detachably held together by a. set screw!) or the like. The free end of the shorter ;leg,;7. is provided with a cap 10,

adapted tofrictionally engagetheends of.

thelug 5, as shown in Figs. 8 and 9, so that the housing 2 may be adjustably pivoted to adjustablyhold said housing in' the dee sired position. The other lug Gacts merely asa centering pin and engages a bearing 6" on a .sleevel2. extending transversely of the longer leg ;8 ofthe bracket (Fig. 7), and preferably carried by orpart of a junction box 12' arranged on said leg. Whenever it is desired .to remove the lamp casing, the leg '7 of the bracket frame carryingthe casing 'is deta'c-hed from the longer leg of the bracket, as will be apparent from the construction shown in Figs. 2 and 3, simply by loosening the sets'crew 9 and moving the leg 7 away from the leg 8.

The brackets may be supported in any desired manner, depending, as shown, or projecting upwardly, as desired, from a wall. flooror ceiling, by any suitable means. In

thepresent instance there is shown a hollow.

said junction boxes and releasably maintained in pivotal adjustment therewith by set screws 14, or the like Thus the junction boxes not only serve as junction boxes, but as couplings besides.

it will be noted that the tube 13, together Wltll the junction boxes or couplings and the brackets 7--8 form a conduit through which the wires 4 may be drawn, leading to the lamps 1. At'the ends of the tube 13 are transverse tubes' l5, for supporting the spot lightsin any desired manner, for example from overhead, as indicated in dotted lines 2), or folsupporting them on the floor, as shown i-n .full lines.

A color screen 16 is arrangedto encircle each lamp and housing. The screen consists of a pair of coaxially spaced s1de members or annular rings 17, 18, each'preferably vi Lshape in cross-section, so as to be of angle-iron formation, one flange extend ng radially inwardly and the other flange ex,- tending axially inwardly of the. screen (F lgs. 4L and 6). Brace rods19 are arranged transversely of the parallel side rings at intervals about the-peripheries thereof and are connected at their ends to said rings in any suitable manner. Spokes 2O radiate inward- !v ofone of said side members, as for in stance the member 17,'and may be integral with said brace rods or rings, if so desired. 'I'hel nner ends of said spokes are connected to .the hub 21, -which is revoluble on the sleeve 12, so that the side'frames 17 and 18 are carried by the hub 21 and are revoluble about the lamp. r

A nnularly arranged about the frames 17 18, is a'series of sheets of colored material 22 of i'singlass, celluloid or other suitable material. In order that the sheets 22 may arcuate clamping members 23, angular in cross section, adapted to extend along and be superimposed on the angle-formed rings 17,-18, (F ig; 6) to hold the sheets 22 therebetween. Bolts or'screws 2 1 are inserted throughthe cooperating angle-shaped members 23, and the members 17 and '18 respectively, to detachably clamp the sheets 22 therebetween. p I

From the foregoing description it is seen that the lamp housing with the lamp therein is pivotally adjustable on an axis coincident with the rotational axis of the screen, and

' that the combined'housing and screen are pivotally adjustable about the axis of the longer leg 8 of the bracket, these two axes of adjustment being mutually perpendicular to each other. 7 I

The rotatable screen 16 may bedriven by any suitable means and in the present instance I prefer to use a drive means whereby the screens (if more than one) may be driven in unison from amain drive shaft,

purposes, or for theatres.

- porting each of said screens, a

a bracket 28 carried. by the tube .13, said motor having a gear 29 carried by its armature and meshing .with the gear. 30 carried by the main drive shaft 25 s j v j Adjacent each of thejunction boxes 14: the shaft 25 'carries a worm 31. A gear 32 is secured to each of the hubs 21 of the screens, and'between each gear 32 and the worm 31 l have provided a flexible. driving shaft 33 with gears 34 and- 35 at its opposite ends, adapted to mesh'with the gears: 31 and 32 respectively. In 7 this manner there is a flexibility of movement and there may bean adjustment of the brackets 7 8, and of the lamp casings, without in any way interrupt mgthe rotation of the color screens.

The devices may be used wherever found applicable, either for advertising or display The colors of the screens may be as desired. 2

What I claim as new and desire to secure by Letters Patent is 1. In a device of the kind described. and

be removably held in place, I have arranged rota able screens for sald lamps means for t onal axes a'imain drive shaft for all of said screens, and intermediate drive means-connecting each screen with said mainshaft for continuously rotating said screens.

3'. In a device of the kind described and 1n combination, a lamp,a rotatable screen for saidlamp, said screen, means for pivotally adjusting sald lamp relative to said screen about an axis perpendicular to said first-mentioned pivotal axis, and drive means for continuously rotating said screen j 4. In a device'of the kind described and 1n combination, a series of lamps, individual rotatable screens for each of means for, independently adjustably supshaft, gears at intervals on said drive shaft, gears at each of said screens and adjustably movable therewith,-and individual flexible shaftsbetween said first and second-mentioned gears 'to drive said screens.

means for pivotally adjusting main drive said lamps,

5. In a device of the kind described and in combination, a series of lamps, individual rotatable screens for said lamps, means for individually adjusting said screns, a main drive shaft for all of said screens, gears at intervals on said drive shaft, gears at each of said screens, and intermediate flexible shafts having gears at their ends meshing with the gears at the main drive shaft and at the screen for driving said screens.

6. In a device of the kind described and in combination, a supporting frame, a lamp carried thereby, a screen rotatable relative to said lamp and carried by said frame, adjustable means for supporting said screen and lamp, means independent of said firstmentioned adjusting means for adjusting said lamp relative to said screen, and drive means for rotating said screen.

7. In a device of the kind described and in combination, a J-shaped supporting frame made in a plurality of adjoining sections and pivotally adjustable about its longer leg as an axis, a lamp mounted between said parallel legs and carried by the shorter leg, a screen encircling said lamp and rotatably carried by the longer leg, whereby said screen and lamp may be adjusted in unison about the longitudinal axis of said longer leg, and said lamp may be adjusted about an axis perpendicular to said pivotal axis of the longer leg.

8. In a device of the kind described and incombination, a supporting frame, a lamp mounted thereon, a rotatable color screen encircling said lamp and comprising a pair of angular, coaxial side members of angleiron formation, brace bars connecting said side annular members at their peripheries, color sheets between said members across said spaced peripheries, spokes on one of said side members, a hub connecting said spokes, a rod rotatably supporting said hub on said supporting frame, angle members superimposed on said side members, and means for clamping said sheets at the side edges between said side members and superimposed angle members.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing Witnesses.

GEORGE E. STEPHENSON.

Witnesses ROY HILL, RUTH M. Ermmmr. 

